I don't believe that's a WWII liner.
Liner does not match my examples, and the split pins look really loose.
there was a 3rd beaded with full liner, pristine!. It was stolen. The thief paid for the crime but I never physically got it back.
The m40 shell looks good to me, can not really tell about the liner...hard to see clearly. The chinstrap looks good to me also.
I am a firefighter by career. This gives me a great deal of time to find people who are bad actors or have wrong me or others in the marketplace. I have been slowly moving out of physical holding in regards to these collectables. eventually I will just be an observer of the marketplace sadly.
The beaded LS is good, all parts that are left are original. It displays well. Jim G.
Both helmets appear to be original LS as stated first one is a make shift job. I like your beaded one the best. timothy